Street-sweeping machine



Apr. 24., 1' 923. '1,452,735

, H. G. HAWORTH STREET SWEEPING MACHINE L'q. LU. 9S @noem/Coz Henry 6.Hal/Vorz @g1g /z Q O( g4 @Hof/14014 H. G. HAWORTH STREET SWEEPRNGMACHINE Filed May v, 1919 5 sheets-sheet '2' Hen@ Q. Hmm/ @Hoff/140,13

Apr. 24, 1923; I 1,452,735

H. G. HAWORTH STREET S'WEEPING MACHINE Filed Mayl 7, 1919 5sheets-sheet@ 'Henry Q. Hawor/ I a 'l I (lirez-m H. G. HAVVORTH STREETSWEEPING MACHINE Filed May '7. 1919 5 Sheets-Sheet 5 FM -Mw 31470044.for Henry Hamm/7% Patented am. 24, 1923.

'IED 75';

OFFICE.

HENRY G. HAWORTH, OF'LEAVENWORTH, KANSAS, ASSGNOR OF ONE-HALF TOBENJAMIN F.- SAMUELS, OF LEAVENWORTH, KANSAS.

STREET-SWEEPING MACHINE.

Application filed May 7, 1919. Serial No. 295,443.

Be it known that I, HENRY G. HAwoR'rH, a citizen of the United States,residing at Leavenworth, in the county of Leavenworth and State ofKaisas, have invented certain new and useful Improvements in Street-Sweeping Machines, `of which the following is a "full, clear, and exactdescription, such as will enable others skilled in the art to which itappertains to make and use the same.

The invention relates to street sweeping machines, and more particularlyto a machine to follow the curb stoneof the usual city street and sweepthe refuse from the gutter into the path of arear broom which sweeps thepaving and discharges the sweepings therefrom as well as the gut-terrefuse 'into an elevator from where the sweepings and. refuse areelevated and discharged into a receptacle from which they may be emptiedfrom time to time.

It is not new to sweep the gutter, or to elevate the sweepings anddeposit them into a receptacle, but certainimprovements are embodied 1nthe present constructlon which enables the operator to accurately guidethe machine so thatthe gutter broom will follow the glitter, and meansis provided to regu- '..late the pressure of the rear broom on thepaving so that it will follow the usual un` even surface thereofandvsweep the low places as well as the high ones.

A floating elevator always self adjusting to the uneven surface ofthepaving, and a means to maintain the speed of the brooms andAelevatorwhile turning corners are important features of theimprovements.-

y With these a-nd other objects in view, the invention consists in thefeatures of construction, combinations and arrangements of partshereinafter set forth and more par- Y ticularly pointed out in theappended claims,

the accompanying drawings illustrating a street `sweeping machine inwhich the improvements are embodied.

In the drawingsz- Fig.v 1 is a -view in side elevation of a l streetsweeping machine in which the improwments are embodied. Fig. 2 is a planview of the machine.

Fig. 3 is a' front View in elevation.

Fig. 4 is a vertical longitudinal sectional view taken on line 4 4 ofFig. 2.

F ig. 5 is a vertical longitudinal sectional view taken on line 5-5 ofFig. 6.

Fig. 6 is a plan view with the elevator', sweepings receptacle andaccompanying parts removed; y

Flg. 7 is an enlarged view of one of the clutch gear wheels taken online 7-7 of Fig. 8. 'y

"Fig, 8.is an enlarged fragmentary ksectional view taken on line 8 8 ofFig. 6.

Fig. 9 is anenlarged view of one of the clutches taken on line 9-9 ofFig. 8.

Fig. 10 is any enlarged view of one ofthe clutches taken on line 10-10of Fig. 11.

Fig. 11 is` an enlarged fragmentary view in section, taken on line11--11 of Fig. 6.

Fig. 12 is an enlarged view of one of the clutch gear wheelstaken online 12412 ofv Fig. 11.

Fig. 13 is an enlarged perspective view of the carrying members for therear broom apron and the lower end of the elevator.'

Fig. 14 is an enlarged perspective view of the opposite carrying memberfor the rear broom apron and the lower end of the elevator.

Fig.-15 is an'enlarged fragmentary perspective view of the rear broomapron.

Fig. 16 is an enlarged plan view of the gutter broom frame and gutterbroom.

Fig.y 17 isV an enlarged view in side elevation of the gutter broom andglitter broom frame.

Fig. 18 is an enlarged front view inelevation of the gutter broom frameand gutter broom.

Fig.` 19 is an enlarged fragmentary view in side elevation of the gutterbroom frame.

The frame 1, rear axle shaft 2, 2a, rear supporting wheels 3, 3a, axlehousing 4, gear casngs 5 and 6, engine 7, front springs 8, and steeringwheel 9 are of common and well known construction in motor drivenmachines. The axle shaft is divided as usual and the wheels 3 and 3a arerigidly mountsame tracks.

The front wheels 11 are connected to the. axle 1() on the incliningangle as shown so that they can be steered along and against the streetcurb for the purpose of sweeping i K. the street gutter as willhereinafter appear.

The axle housing 4 is secured to the frame 1 in the usual manner by theclamp boxes 14 and on the axle 2 between the box 14 and the wheel 3 is`rigidly mounted the clutch member. 15 whiclrhas pivotally connectedthereto theratchet jaws 16 to engage the I teeth 17- of the gear wheel18, the latterbeing revolvably mounted on the shaft Zas shown -in Fig.8.- The springs 19 are pivoted toi` t'he clutch member 15 and ,arealways in ten- 1 siony to hold the jaws 16 in Iengagement with the teeth17. On thehub 2() of the gear wheel 18 is mounted the sprocket wheel 21to drive 'the elevator as will hereinafter appear.

0n the axle shaft 2a is rigidly mountedy theclutch member 22 to which ispivotally connected the jaws 23 to engage the teeth 24 of the gear wheel25. The gear wheel 25 is revolvably mounted on the axle shaft 2a andhasrigidly. mounted on the hub 26 thereof, the sprocket 'wheel' 27 todrive the gutter broom as will hereinafter appear.

l Thersp'rings 28 are. pivotally connected to the clutclr member 22 andare alwaysv in tension lto hold the jaws 23 in engagement j with theratchet teeth 24.

From the foregoing 1t. will be understoodthat. when the axle shaft 2, 2is driven in a forward motion that will cause the rear' wheels 3, 3a totrail or follow the front wheels l11, the gear wheels 18 and 25 will bedriven with the axle, butwhen the axle islv "driven in the oppositedirection. the gear 7 wheels will not be driven thereby.

Adjacent the boxes 14 upon the frame 1- are the journal boxes 29, inwhich is-jour-` naled the 'counter shaft 30, with the duplichine bedrivenby the engine 7 or drawn by cate` gear wheels 31 and 32 i idlymounted thereon and respectively me ing with the gear-wheels 18 and 25.The sprocket; wheel 33`is rigidly mounted on the shaft 30 to drive therear broom as will hereinafter appear.

From the foregoing it will be understood that if either of the wheels 3or 3*? encounter .a slippery paving the other wheel will drive nvthesprocket wheels 21, 17 and 33, and in turning a corner, the outer wheel3 or 3a will drive the sprocket wheels at a speed `corresponding to thespeed of the fastest revolvf 1 wheel, and this is true whether themaanimals.

Ibar l51, so that. vthe weighte It is not desired to confine the use ofthe improved machine to motor driven machines as it is obvious that itmaj7 be drawn by animals.

Journaled on the rear axle shaft 3, 3a are the rear broom lever shapedframe members l 34 and 35, each of which extends rearwardly from thewheels 3, 3a and is provided with the journal box 36 to receive the rearbroom 'shaft 37, on which is mounted the rea-r broom 38\of usualconstruction. The shaft 37 has rigidly mounted thereon, the sprocketwheel 39 which is driven from the sprocket wheel j 33 by the sprocketchain 40.

f It will be noticed that the gear wheels 18 and 25, land v31 and 32reverse the counter shaft 30 so that the broom 38 is rotated in adirection that will cause it to sweep the sweepings toward the wheels 3and 3a when the machine advances.

The journal boxes 36 for the rear broom shaft 37'are secured in thepivoted vframe members 34 and 35 bythe adjusting screws 41 and 42 sothat the boxes may be adjusted Y to af greater or less distance from thecounter shaft 30 to correspond to the length of the sprocket chain40-and to provide for the lengthening of the chain by wea-r.V Thescrewsv 41 and`42 lrovide a pivotaloonnection of the ourn ,boxes totheframe members 34 and 35 so that lthe rear broom 38 may rise and fall ateither end thereof -'independently of the other end and follow `theuneveness of the paving or road surface. rllhis is very advantageous asno paving or road has a true level surface and many city streets arevery uneven and punctured with many holes. j v

The rear broom carrying members 34 and 35 extend forwardly from the rearaxle shaft 2, 2? and are each provided with av weight 43 which can bemoved toward and from the axle shaft and locked .in the desiredvposition -to so counterwei'ght the rear broomv 38 as to secure `thedesired pressure of thebroom on the paving or road slface,

. 46 that are rigidly mounted on the rock shaft 47, the shaftbeing'jonrnaled in the 'Y boxes 48 rigidly secured to the sweepingsreceptacle 61.

The shaft 49 mounted rigidly-thereon, to which is connected the latch 50to en ge the latch ends of the members 34. and 35 can thrust down`wardly and the broom 38v lifted y, from and above the paving; so thatthebroom will not 47 is provided withthe lever drag thereon when not inuse, and to remove' tie weight. from the broom when standing i le. l

Secured to 'the' members 34 and; 35 are the carrying members 52 and 53'respectively, each provided with a deep half box 54 and one 55 toreceive the rear broomv apron shaft 56 and the elevator boxes 57respectively. f

The apron shaft 56 rests loosely' in the half boxes 54 and has looselymounted thereon, themetal aprons 58 over which the broom 38 sweeps the sweepinlrs. The prin# cipal object ofthe shaft 56 resting loosely in thedeep boxes 54 is to allow the shaft to raise in the boxes when the apronisY turned underneath the shaft by-moving the machine backward, or byraising the broom 38 and then lowering it.. It is obvious that the shaft56 will raise in the boxes 54 and when the machine is moved forward theshaft and the aprons will return to normal position as shown in F ig. 5,and the aprons will rest on the paving so the broom 38 will not sweepsweepings underneath the aprons.`

To the end apron 58a is secured the shield 59 which forms a wall outsideof the broom 38 and extends upward within' the broom casing 60 so thatno sweepings can escape over the respective end of theaprons.4

The sweepings receptacle 61 is rigidly mounted on the frame 1 andprovided with the door 62 for the purpose of 'removing the sweepingswhen a quantity has been deposited therein.

The elevator casing 63 has the upper shafty 64 journaled therein nearthe upper end 65 of the casing, and the lower shaft 66 journaled in theboxes 57 near the lower, end 67 of the casing. The boxes 57 projectlaterally on both sides from the casing and rest in the deepl half boxes55 which form a flexible rest for. the lower end of the elevator casing.

The elevator casing rests `on the sweepings receptacle 61l at 68 betweenthe plates 69 which are secured to the receptacle and: prevent thecasing from moving laterally on the receptacle.

The sprocket wheels 70 and 71 are secured to the elevator shafts 64 and66 respectively, and the conveying apron 72 is mounted thereon so thatany sweepings that are swept by the rear broom 38 into the lower end 67of the elevator casing are elevated to the upper end of the casing anddischarged into the spout 73 where they fall by gravity to the sweepingsreceptacle 61. The spout 73 is preferably of canvas and secured to thecover of the receptacle so that no dust can escape from the spout orreceptacle.

To the sweepings receptacle 6l is secured the journal boxes 74 in whichis journaled the `elevator counter shaft 75. The sprocket wheels 76 and77 are rigidly mounted on the shaft 75 and the 'sprocket' wheel 78 isrigidly mounted on the upper elevator shaft 64. he sprocket chain 79 ismounted on the sprocket wheels 21 and 76 and drives the counter shaft 75from the hub 20 of the gear wheel 18. The sprocket chain 80 is mountedon the sprocket wheels 77 and 78' and drives the upper elevator shaft 64from the counter shaft 75.

:It will be noticed that .the centers of the "elevator shafts 64 and 66and the center of the `counter shaft 75 form approximately a right angleand the counter shaft 75 ispurposely arranged in this position withrelation to the shafts 64 and 66 so that as the broom 38 is raised orlowered by the lever 49 or -by following the unevenness of the streetwhen sweeping, the elevator casing 63 will move upward and downward onthe sweepings receptacle-61 and the distance be,

tween the shafts 64 and 75 will notbe sufficiently changed to interferewith the operation of the sprocket chain 79.

The rear broom casing 60 is rigid with the elevator casing 63, coversthe broom 38 ,and is open `to the elevator casing from 81 to the aprons58, so that all the sweepings swept over the aprons must enter thecaslng. j

By removing the sprocket chain 80 the elevator casing 63 and the broomcasing 60 can be lifted bodily from the machine, and A center of thepivotal connection.

The gutter broom frame 82 extends forwardly from the axle shaft 2a andis provided with the journal boxes 83 and 84 in which is journaled thehorizontally disposed counter shaft 85, and with the journal boxes 86and 87 in which is journaled the upright obliquely disposed gutter broomshaft 88.

The counter shaft 85 'is approximately parallel with the axle shaft 2aand has rigidly mounted thereon the sprocket wheel 89 and the beveljgearwheel 90.

vThe gutter broom shaft 88 has rigidly mounted thereonthe bevel gearwheel 91 meshing with the bevel gear wheel 90, and the gutter broom 92,the shaft inclining from the bevel gear wheel 91 downwardly andrearwardly toward the rear broom 38 and inwardly toward the center ofthe' frame 1, so that the gutter' broom will sweep the sweopings fromthe gutter toward the center of the path of the rear broom 38.

The gutter frame 82 is slotted at 93 so that the broom 92 may be liftedand lowered without interfering with the counter Shaft 30 which passesthrough the slot. i

The lifting rod 94 is pivotally connected to the gutter broom frame 82at 95 and to the lever 96, the lever being pivotally connected to thesweepings receptacle 61 at 97 so that the gutter broom 92 may be loweredand raised with the lever 96, the broom be- 'cent wheel 3ftL followingin the tracks of the wheel 11. The g'utter'brooni 92 is in loweredposition as shown and when not obstructed will reach outward beyond thepath of the wheels 3'a and 11 and sweep the sweepings from the` gutterinto the path of lthe advancing rear broom 38 which w1ll Sweep thegutter sweepings together with the other sweepings in the path of thebroom, over the aprons 58 into the elevator c casing 63, from where theconveying apron 7 2 will elevate the sweepings and depositthem in thespout 73 and they will fall by gravity into the sweepings receptacle 6l.

. The gutter broom 92 is olf ordinary flexibleA construction and willwhere there is no curb reach outward beyond the path of the wheels 2aand 11` but Where there is a curb the wheels 2a and 1l mav be runagainst the curb and the broom will Contact with and sweep the curbclean of all refuse.

lVhatl claim kas new, and desire .to secure byLetters Patent, is

1. In a street-sweeping machine, the combination of a frame, areceptacle on the frame, an axle shaft on the frame near the rear end ofthe same, supporting arms pivotally mounted intermediate their endsA onthe ends of the axle shaft, counter-weights on the frontends of saidarms, journal boxes pivotally secured in the rear ends of said arms, arotary broom journaled in said boxes, open top bearings carried by saidarms intermediate said 'E broom and axle shaft, an inclined elevatorhaving a lower shaft removably journalledin said open top bearings andits uppenI end supported against the top of said receptacle, an aproncarried by said arms between the elevator and the rotary broom,-andmeanS for driving said broom and the-elevator from the axle shaft.

2. In a street-sweeper, the combination of a frame, an axle shaftmounted transversely thereon near the rear end thereof, balanced armspivoted on the ends of the axle shaft, a

'rotary broom carried by and between the rear ends of said arms, areceptacle on the frame, open top bearings on the inner sides of thepivoted arms near the rear ends thereof, an elevator discharging intothe receptacle and having` its lower shaft loosely fitted in the forwardopen-top bearings, an apron having end pivots loosely mounted in therear open-top bearings, and means for driving said broom and theelevator from the axle shaft.

3. In a street-sweeper, the combination of l a portable frame, an axleshaft thereon, a

counter-shaft in advance of the axle shaft and geared thereto, a broomSupported transversely inlrear of the axle shaft and' driven from thecounter-shaft, a framepivoted about the axle shaft and extendinglforwardlv therefrom, and havingr an intermediate slotted portionthrough which 4the cbuntershaft passes, a gutter broom mounted `in thefront end of said frame, and

means for driving said gutter .broom from the axle shaft. HENRY G.HAWORTH.

